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CVE-2026-13187— DialogHandler Provider Type Tampering Vulnerability in Telerik UI for ASP.NET AJAX

Quick assessment

Affected
Progress Software Telerik UI for ASP.NET AJAX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Progress Telerik UI for AJAX是Progress Software公司的一套Web界面组件库。 Progress Software Progress Telerik UI for AJAX 2026.2.708之前版本存在代码注入漏洞，该漏洞源于DialogHandler提供程序类型输入可能被篡改，可能改变对话框处理并启用链式利用。

CVSS 8.1 · High EPSS 0.34% · P28

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Progress Software Telerik UI for ASP.NET AJAX 2011.2.712< 2026.2.708 affected
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I. Basic Information for CVE-2026-13187

Vulnerability Information
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Vulnerability Title
DialogHandler Provider Type Tampering Vulnerability in Telerik UI for ASP.NET AJAX
Source: CVE Program / CVE List V5
Vulnerability Description
In Progress® Telerik® UI for AJAX prior to v2026.2.708, DialogHandler provider type input may be tampered with, potentially altering dialog processing and enabling chained exploitation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部可控制的输入来选择类或代码(不安全的反射)
Source: CVE Program / CVE List V5
Vulnerability Title
Progress Software Progress Telerik UI for AJAX 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Progress Telerik UI for AJAX是Progress Software公司的一套Web界面组件库。 Progress Software Progress Telerik UI for AJAX 2026.2.708之前版本存在代码注入漏洞，该漏洞源于DialogHandler提供程序类型输入可能被篡改，可能改变对话框处理并启用链式利用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Progress Software Telerik UI for ASP.NET AJAX 2011.2.712 ~ 2026.2.708 -

II. Public POCs for CVE-2026-13187

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-13187

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News Coverage for CVE-2026-13187 (1)

Same Patch Batch · Progress Software · 2026-07-22 · 13 CVEs total

CVE-2026-13185 8.1 HIGH PersistenceFramework Cookie Deserialization Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-13181 8.1 HIGH RadAsyncUpload AsyncUploadTypeName Type Resolution Vulnerability in Telerik UI for ASP.NET
CVE-2026-13186 8.1 HIGH AppDataStorageProvider Path Traversal Deserialization Vulnerability in Telerik UI for ASP.
CVE-2026-13190 8.1 HIGH PersistenceFramework Unsafe Type Resolution Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-13189 7.5 HIGH SpellChecker DictionaryLanguage Path Traversal Vulnerability in Telerik UI for ASP.NET AJA
CVE-2026-13184 7.5 HIGH RadAsyncUpload Default HMAC Key Fallback Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-13182 7.5 HIGH RadAsyncUpload Client-State Decrypt-vs-Parse Oracle Vulnerability in Telerik UI for ASP.NE
CVE-2026-13183 7.5 HIGH RadAsyncUpload Upload Metadata Timing Oracle Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-14932 6.5 MEDIUM Unauthenticated File Read and Deletion via Hardcoded Encryption Key in RadChart
CVE-2026-13192 6.5 MEDIUM RadEditor PDF Export SSRF Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-13188 5.9 MEDIUM DialogHandler Parameters Tampering Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-14865 5.3 MEDIUM XXE Denial of Service via RadLayoutBuilder Client State in Telerik UI for ASP.NET AJAX

IV. Related Vulnerabilities

Same product: Telerik UI for ASP.NET AJAX
Same vendor: Progress Software
Same weakness: CWE-470